One thing that I would love to see is a before and after stats on the rebirth page. I keep forgetting what my stats were during the current run and then guessing at how much they have increased can be difficult.
So simple, yet so much fun. The concepts are very basic but have been put together very well. This seems to be a game that you can just pick up and play. You sometimes need to re-pick where your skills have gone to beat certain levels and that adds another dimension to the game. It seems that if you don't/couldn't be bothered playing one of the other protector games this gives you that same experience just in a slightly different way. The one thing that I would change/like to clarify is the difficulty rating.
Will try to add this next update. Thanks for the feedback.